Journal of Food, Agriculture and Environment

The influence of disruption of irrigation on yield and yield components of rapeseed cultivars in Esfahan

Author(s):

Ali Soleymani *, Mohamad Hesam Shahrajabian

Recieved Date: 2011-09-10, Accepted Date: 2012-01-04

Abstract:

Iran is a country of water scarcity due to general low precipitation, high evaporation and the temporal and spatial distribution of rainfall. In order to determine the effects of disruption of irrigation at different growth stages of autumn rapeseed cultivars, an experiment was conducted in 2006-2007 at Isfahan Agriculture Research Station. A split plot layout within a randomized complete block design with 3 replications was used. Main plots were seven levels of cut off irrigation; namely, D1 = current irrigation or irrigation after 80 mm vaporization from class A basin to physiological maturity, D2 = cut off irrigation from stem elongation phase, D3 = cut off the irrigation from flowering, D4 = cut off the irrigation from pod formation phase, D5 = cut off the irrigation at stem elongation and flowering phase, D6 = cut off the irrigation at stem elongation and pod formation phase, D7 = cut off the irrigation at flower and pod formation, and subplots were two rapeseed cultivars; namely, Zarfam and Okapi. With increasing the number of irrigation, rapeseed yield will increase, but if the water lacks occurred, it is better not to cut off irrigation at flower and stem elongation phase, in order to get acceptable seed and oil yield. Zarfam had the highest oil and seed yield in withheld irrigation conditions and also had the best adaptation in water deficit conditions.

Keywords:

Disruption of irrigation, yield, yield components, rapes seed, cultivars

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Agriculture
Pages: 594-595

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